linux-kernel - Re: long-term regression

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Date:	Tue, 26 Jun 2007 12:14:25 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	david@...g.hm
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net
Subject: Re: long-term regression

On Mon, 25 Jun 2007 15:56:17 -0700 (PDT) david@...g.hm wrote:

> due to the size the files are posted at http://linux.lang.hm/linux
> 
> let me know what else I can send to help.
> 
> David Lang


I suggest that you test 2.6.22-rcN using one or both of these
boot options:

noisapnp
pnpacpi=off

Somewhere between 2.6.18 and 2.6.22-development, the ACPI config
symbol also starting enabling (selecting) PNP.  That's one of many
differences....


I would also disable CONFIG_USB_USS720, at least for testing.


> On Mon, 25 Jun 2007, Randy Dunlap wrote:
> 
> > Date: Mon, 25 Jun 2007 15:40:28 -0700
> > From: Randy Dunlap <randy.dunlap@...cle.com>
> > To: david@...g.hm
> > Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org,
> >     linux-usb-devel@...ts.sourceforge.net
> > Subject: Re: long-term regression
> > 
> > david@...g.hm wrote:
> >>  On Thu, 21 Jun 2007, Randy Dunlap wrote:
> >> 
> >> >  Date: Thu, 21 Jun 2007 08:36:59 -0700
> >> >  From: Randy Dunlap <randy.dunlap@...cle.com>
> >> >  To: Andrew Morton <akpm@...ux-foundation.org>
> >> >  Cc: david@...g.hm, linux-kernel@...r.kernel.org,
> >> >      linux-usb-devel@...ts.sourceforge.net
> >> >  Subject: Re: long-term regression
> >> > 
> >> >  On Thu, 21 Jun 2007 05:28:07 -0700 Andrew Morton wrote:
> >> > 
> >> > > >  On Sun, 17 Jun 2007 10:57:55 -0700 (PDT) david@...g.hm wrote:
> >> > > >  I haven't had time to bisect this, but I'm having a problem on a 
> >> > > >  AMD64
> >> > > >  gentoo system where the printer doesn't work with recent kernels.
> >> > > > 
> >> > > >  2.6.18-rc3 worked
> >> > > >  2.6.21.1 doesn't
> >> > > >  2.6.22-rc4 doesn't
> >> > > > 
> >> > > >  unfortunantly the system is gooted on 2.6.18 at the moment and I'm 
> >> > > >  out of
> >> > > >  town so my ability to test is limited I can provide the 2.6.22-rc4
> >> > > >  (attached) and 2.6.18-rc3 configs.
> >> > > > 
> >> > > >  dmesg appears to show the port being detected, but writes to the 
> >> > > >  port
> >> > > >  under newer kernels appear to complete, but no data gets to the 
> >> > > >  printer.
> >> > > > 
> >> > > >  any suggestions other then doing the large bisect?
> >> > > 
> >> > >  That would be good, thanks.  Please be sure to cc linux-usb-devel on
> >> > >  the results.
> >> > 
> >> >  OK, I'm curious about how someone deduced that this is a problem
> >> >  with a USB printer vs. parallel port printer since the config file has:
> >> > 
> >> >  CONFIG_PRINTER=y
> >> >  CONFIG_USB_PRINTER=y
> >> > 
> >> >  The kernel boot log should probably be posted also.
> >>
> >>  here is the dmesg from 2.6.22-rc4 and kern.log showing 2.6.22.-rc4 and
> >>  2.6.180rc3
> >>
> >>  the printer not working is the parallel port.
> >
> > This email didn't show up on lkml or linux-usb-devel due to size limits (it 
> > was 900+ KB).
> >
> > David, please send your working 2.6.18 config file.
> >
> > Can you post the kernel log files on the web somewhere?

---
~Randy
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